Hidari Mitsudomoe (Sketch) Bicycle Playing Cards

The left and right of the tomoe pattern are not determined by the direction of the swirl, but rather by a rational name created based on the diagram. Even a skilled artist may be momentarily unsure of the left and right of the tomoe. In such cases, they recall a useful oral tradition... First, they clench their left palm and look at their wrist. The shape is that of a left tomoe. When they clench their right palm, the shape of a right tomoe appears instantly. (from 'The Story of Family Crests' by Tsumio Awagasaka, P61) This design is a rough sketch specification. It is a standard rule that the tail of the tomoe does not touch the outer circle (basic circle). (Reference: 'The Story of Family Crests' by Tsumio Awagasaka, P63 and 'The Magic of Manji, The Curse of Tomoe' P145)